Design and verification of model predictive control for micro-turboshaft engine. (December 2019)

• Record Type: Journal Article
• Authors: Zhang, Mengwei; Lin, Zhixiang; Huang, Haiyang; Zhang, Tianhong
• Is Part Of: Advances in mechanical engineering. Volume 11:Number 12(2019)
• Publication Date: 2019-12
• Subjects: Micro-turboshaft engine -- nonlinear model predictive control -- linear parameter varying model -- online optimization -- bench test; Mechanical engineering -- Periodicals; 621.05
• DOI: 10.1177/1687814019890198
• Languages: English
• ISSNs: 1687-8132

Abstract

In this article, a nonlinear model predictive control algorithm for a micro-turboshaft engine is designed. The control effect is verified by a bench test. First, a micro-turboshaft engine test bench is built, and the open-loop control experiment was carried out on it. Based on experiment data, a linear parameter varying prediction model is established. Then, by online rolling optimization based on multistep output prediction, together with feedback correction, a nonlinear model predictive control algorithm is obtained. The influence of algorithm parameters on the control effect is studied, and reasonable prediction period M, control period N, and control coefficient R are designed. Finally, the application of nonlinear model predictive control in micro-turboshaft engine is verified by bench test. The results show that with the changing of pitch angle, nonlinear model predictive control algorithm has a faster adjustment speed and smaller overshoot, compared with the conventional cascade proportional–integral control with feedforward. It is proofed that nonlinear model predictive control can be applied to a real turboshaft engine and has a better control effect.